volcanic breccia

  • 释义

    火山角砾岩

数据更新时间:2026-04-19 13:12:31
1、

Pyroclastic rocks are mainly composed of volcanic breccia and tuff.

火山碎屑岩,包括火山角砾岩和凝灰岩;

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2、

There are Cenozoic continental intermediate and acid volcanic rocks in the Tianshui area, western Qinling. The rocks are mainly composed of rhyolite, parts of rhyolitic ignimbrite ( breccia tuff), a little amount of breccia tuff and volcanic agglomerate.

西秦岭甘肃天水地区分布的新生代陆相中酸性火山岩,主要由流纹岩、部分流纹质熔结(角砾)凝灰岩及少量角砾凝灰岩、火山集块岩等组成。

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3、

The thrid part are tuff, ferruginous dolomite, crystal tuff and volcanic breccia.

第三段以凝灰岩、铁质白云岩、晶屑凝灰岩、火山角砾岩为主。

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4、

A great mumber of melt inclusions are there in the quartz phenocrysts. The ore bodies of Emei pyrophyllite are located in rhyolitic crys-tal fragment tuff, ignimbrite and volcanic breccia ( agglomerate)-bearing tuff.

石英晶屑内熔融包裹体发育。峨嵋矿区矿体赋存于流纹质晶屑凝灰岩、熔结凝灰岩、含火山角砾(集块)凝灰岩中。

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5、

These deposits were, when being formed, controlled by volcanic structures ( volcanic dome and volcanic breccia pipe), fault structures ( NE and NW trending), gabbro porphyrite body and depression in depression.

火山穹窿、爆发角砾岩筒等火山构造,NE向、NW向断裂构造,辉石闪长玢岩体,洼中洼环境等对成矿具有控制作用。

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6、

Xiangluwanzi gold deposit is a volcanogenic hydrothermal ore deposit related to volcanic cryptoexplosive breccia body.

香炉碗子金矿是一与火山隐爆角砾岩体有关的火山热液型金矿床.

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7、

Sedimentary pyroclastic rocks are mainly sedimentary tuff and sedimentary volcanic breccia.

沉火山碎屑岩,包括沉凝灰岩和沉火山角砾岩。

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